Recent Submissions

  • A review of freshwater crayfish introductions in Africa 

    Madzivanzira, T.C.; South, J.; Wood, L.E.; Nunes, A.L.; Weyl, O.L.F. (2021)
    This review summarizes and analyses information on freshwater crayfish introductions in Africa. A total of 136 research papers and reports were found to be relevant. Forty-eight percent reported presence; 21% described ...
  • A global-scale screening of non-native aquatic organisms to identify potentially invasive species under current and future climate conditions 

    Vilizzi, L.; Copp, G.H.; Hill, J.E.; Adamovich, B.; Aislabie, L.; Akin, D.; Al-Faisal, A.J.; Almeida, D.; Azmai, M.N.A.; Bakiu, R.; Bellati, A.; Bernier, R.; Bies, J.M.; Bilge, G.; Branco, P.; Bui, T.D.; Canning-Clode, J.; Ramos, H.A.C.; Castellanos-Galindo, G.A.; Castro, N.; Chaichana, R.; Chainho, P.; Chan, J.; Cunico, A.M.; Curd, A.; Dangchana, P.; Dashinov, D.; Davison, P.I.; de Camargo, M.P.; Dodd, J.A.; Donahou, A.L.D.; Edsman, L.; Ekmekci, F.G.; Elphinstone-Davis, J.; Eros, T.; Evangelista, C.; Fenwick, G.; Ferincz, A.; Ferreira, T.; Feunteun, E.; Filiz, H.; Forneck, S.C.; Gajduchenko, H.S.; Monteiro, J.G.; Gestoso, I.; Giannetto, D.; Gilles, A.S.; Gizzi, F.; Glamuzina, B.; Glamuzina, L.; Goldsmit, J.; Gollasch, S.; Goulletquer, P.; Grabowska, J.; Harmer, R.; Haubrock, P.J.; He, D.K.; Hean, J.W.; Herczeg, G.; Howland, K.L.; Ilhan, A.; Interesova, E.; Jakubcinova, K.; Jelmert, A.; Johnsen, S.I.; Kakareko, T.; Kanongdate, K.; Killi, N.; Kim, J.E.; Kirankaya, S.G.; Knazovicka, D.; Kopecky, O.; Kostov, V.; Koutsikos, N.; Kozic, S.; Kuljanishvili, T.; Kumar, B.; Kumar, L.; Kurita, Y.; Kurtul, I.; Lazzaro, L.; Lee, L.; Lehtiniemi, M.; Leonardi, G.; Leuven, R.; Li, S.; Lipinskaya, T.; Liu, F.; Lloyd, L.; Lorenzoni, M.; Luna, S.A.; Lyons, T.J.; Magellan, K.; Malmstrom, M.; Marchini, A.; Marr, S.M.; Masson, G.; Masson, L.; McKenzie, C.H.; Memedemin, D.; Mendoza, R.; Minchin, D.; Miossec, L.; Moghaddas, S.D.; Moshobane, M.C.; Mumladze, L.; Naddafi, R.; Najafi-Majd, E.; Nastase, A.; Navodaru, I.; Neal, J.W.; Nienhuis, S.; Nimtim, M.; Nolan, E.T.; Occhipinti-Ambrogi, A.; Ojaveer, H.; Olenin, S.; Olsson, K.; Onikura, N.; O'Shaughnessy, K.; Paganelli, D.; Parretti, P.; Patoka, J.; Jr, R.; Pellitteri-Rosa, D.; Pelletier-Rousseau, M.; Peralta, E.M.; Perdikaris, C.; Pietraszewski, D.; Piria, M.; Pitois, S.; Pompei, L.; Poulet, N.; Preda, C.; Puntila-Dodd, R.; Qashqaei, A.T.; Radocaj, T.; Rahmani, H.; Raj, S.; Reeves, D.; Ristovska, M.; Rizevsky, V.; Robertson, D.R.; Robertson, P.; Ruykys, L.; Sab, A.; Santos, J.M.; Sari, H.M.; Segurado, P.; Semenchenko, V.; Senanan, W.; Simard, N.; Simonovic, P.; Skora, M.; Svolikova, K.S.; Smeti, E.; Smidova, T.; Spelic, I.; Srebaliene, G.; Stasolla, G.; Stebbing, P.; Stevove, B.; Suresh, V.R.; Szajbert, B.; Ta, K.A.T.; Tarkan, A.S.; Tempesti, J.; Therriault, T.W.; Tidbury, H.J.; Top-Karakus, N.; Tricarico, E.; Troca, D.A.; Tsiamis, K.; Tuckett, Q.M.; Tutman, P.; Uyan, U.; Uzunova, E.; Vardakas, L.; Velle, G.; Verreycken, H.; Vintsek, L.; Wei, H.; Weiperth, A.; Weyl, O.L.F.; Winter, E.R.; Wlodarczyk, R.; Wood, L.E.; Yang, R.B.; Yapici, S.; Yeo, S.S.B.; Yogurtcuoglu, B.; Yunnie, A.L.E.; Zhu, Y.J.; Zieba, G.; Zitnanova, K.; Clarke, S. (2021)
    The threat posed by invasive non-native species worldwide requires a global approach to identify which introduced species are likely to pose an elevated risk of impact to native species and ecosystems. To inform policy, ...
  • Biotic Interactions as Mediators of Biological Invasions: Insights from South Africa 

    Le Roux, J.J.; Clusella-Trullas, S.; Mokotjomela, T.M.; Mairal, M.; Richardson, D.M.; Skein, L.; Wilson, J.R.; Weyl, O.L.F.; Geerts, S. (2020)
    This chapter provides an overview of the researchers and research initiatives relevant to invasion science in South Africa over the past 130 years, profiling some of the more recent personalities, particularly those who ...
  • Habitat utilisation of Pseudobarbus afer and Sandelia capensis in headwaters of the Swartkops River, Eastern Cape, South Africa 

    Hannweg, B.; Marr, S.M.; Bloy, L.E.; Weyl, O.L.F. (2020)
    Habitat degradation is one of the greatest threats to endemic freshwater fish in the Cape Fold Ecoregion. One habitat restoration strategy is the replication of critical habitat using artificial materials. In this paper, ...
  • Using action cameras to estimate the abundance and habitat use of threatened fish in clear headwater streams 

    Hannweg, B.; Marr, S.M.; Bloy, L.E.; Weyl, O. (2020)
    Snorkel and electrofishing surveys are the traditional baseline methods for fish surveys in clear headwater streams. However, action cameras provide a non-harmful alternative to monitor freshwater fish populations to develop ...
  • Ecosystem responses to the eradication of common carp Cyprinus carpio using rotenone from a reservoir in South Africa 

    Dalu, T.; Bellingan, T.A.; Gouws, J.; Impson, N.D.; Jordaan, M.S.; Khosa, D.; Marr, S.M.; Mofu, L.; Schumann, M.; Slabbert, E.; van der Walt, J.A.; Wasserman, R.J.; Weyl, O.L.F. (2020)
    1. The control of invasive alien fish populations using piscicides to alleviate impacts on native biota is a controversial conservation strategy because the collateral impacts on non‐target taxa are not well documented. ...
  • In a pinch: mechanisms behind potential biotic resistance toward two invasive crayfish by native African freshwater crabs 

    South, J.; Madzivanzira, T.C.; Tshali, N.; Measey, J.; Weyl, O.L.F. (2020)
    It is essential to incorporate mechanisms of biotic resistance into predictions of ecological impact conferred by invasive species. Trophically and functionally analogous native species have high potential to confer biotic ...
  • Life-history of the River Goby Glossogobius callidus (Teleostei: gobiidae) 

    Mofu, L.; Woodford, D.J.; Wasserman, R.J.; Weyl, O.L.F. (2020)
    The River Goby, Glossogobius callidus , is native to freshwater and estuarine habitats in South Africa. Individuals (21.1 - 144.4 mm Total Length (L T)) were sampled from impoundments in the Sunday's River, Eastern Cape ...
  • Influence of intra- and interspecific variation in predator-prey body size ratios on trophic interaction strengths 

    Cuthbert, R.N.; Wasserman, R.J.; Dalu, T.; Kaiser, H.; Weyl, O.L.F.; Dick, J.T.A.; Sentis, A.; McCoy, M.W.; Alexander, M.E. (2020)
    Predation is a pervasive force that structures food webs and directly influences ecosystem functioning. The relative body sizes of predators and prey may be an important determinant of interaction strengths. However, studies ...
  • Food web properties vary with climate and land use in South African streams 

    Jackson, M.C.; Fourie, H.E.; Dalu, T.; Woodford, D.J.; Wasserman, R.J.; Zengeya, T.A.; Ellender, B.R.; Kimberg, P.K.; Jordaan, M.S.; Chimimba, C.T.; Weyl, O.L.F. (2020)
    Land use intensification and climate change are two prominent drivers of variation in biological communities. However, we know very little about how these two potential environmental stressors interact. Here we use a stable ...
  • Ecomorphology of largemouth bass relative to a native trophic analogue explains its high invasive impact 

    Luger, A.M.; South, J.; Alexander, M.E.; Ellender, B.R.; Weyl, O.L.F.; Nagelkerke, L.A.J. (2020)
    Predicting and understanding the impact of biological invaders is a global ecological imperative. Progress has been made through the application of phenomenological analysis via comparative functional response analysis. ...
  • Occupancy dynamics of rare cyprinids after invasive fish eradication 

    Castañeda, R.A.; Mandrak, N.E.; Barrow, S.; Weyl, O.L.F. (2020)
    The eradication of invasive species is a management strategy implemented to eliminate adverse impacts of invaders on native species communities. After eradications, follow-up studies are done to confirm eradication of the ...
  • Invasion syndromes: a systematic approach for predicting biological invasions and facilitating effective management 

    Novoa, A.; Richardson, D.M.; Pyšek, P.; Meyerson, L.A.; Bacher, S.; Canavan, S.; Catford, J.A.; Čuda, J.; Essl, F.; Foxcroft, L.C.; Genovesi, P.; Hirsch, H.; Hui, C.; Jackson, M.C.; Kueffer, C.; Le Roux, J.J.; Measey, J.; Mohanty, N.P.; Moodley, D.; Müller-Schärer, H.; Packer, J.G.; Pergl, J.; Robinson, T.B.; Saul, W.C.; Shackleton, R.T.; Visser, V.; Weyl, O.L.F.; Yannelli, F.A.; Wilson, J.R.U. (2020)
    Our ability to predict invasions has been hindered by the seemingly idiosyncratic context-dependency of individual invasions. However, we argue that robust and useful generalisations in invasion science can be made by ...
  • On the RIP: using Relative Impact Potential to assess the ecological impacts of invasive alien species 

    Dickey, J.W.E.; Cuthbert, R.N.; South, J.; Britton, J.R.; Caffrey, J.; Chang, X.; Crane, K.; Coughlan, N.E.; Fadaei, E.; Farnsworth, K.D.; Ismar-Rebitz, S.M.H.; Joyce, P.W.S.; Julius, M.; Laverty, C.; Lucy, F.E.; MacIsaac, H.J.; McCard, M.; McGlade, C.L.O.; Reid, N.; Ricciardi, A.; Wasserman, R.J.; Weyl, O.L.F.; Dick, J.T.A. (2020)
    Invasive alien species continue to arrive in new locations with no abatement in rate, and thus greater predictive powers surrounding their ecological impacts are required. In particular, we need improved means of quantifying ...
  • Monitoring the silver carp invasion in Africa: a case study using environmental DNA (eDNA) in dangerous watersheds 

    Crookes, S.; Heer, T.; Castañeda, R.A.; Mandrak, N.E.; Heath, D.D.; Weyl, O.L.F.; MacIsaac, H.J.; Foxcroft, L.C. (2020)
    Biodiverse habitats are increasingly subject to an intensification of anthropogenic stressors that may severely diminish species richness. Invasive species pose a dominant threat to biodiversity and biosecurity, particularly ...
  • Temperature regime drives differential predatory performance in Largemouth Bass and Florida Bass 

    Khosa, D.; South, J.; Cuthbert, R.N.; Wasserman, R.J.; Weyl, O.L.F. (2020)
    Predation shapes community structures via direct and indirect mechanisms and it is an ecological imperative that predatory impacts are predicted. In this study, we used comparative functional responses (FRs) to compare ...
  • The genetic characteristics of invasive Largemouth Bass in southern Brazil 

    Frehse, F.D.; Hargrove, J.S.; Weyl, O.L.F.; Vitule, J.R.S. (2020)
    Largemouth Bass (Micropterus salmoides) have been introduced on a global scale for sport fishing but represent a conservation concern given their documented negative impacts on native faunal diversity and abundance. Recent ...
  • Assessing predator-prey interactions in a chemically altered aquatic environment: the effects of DDT on Xenopus laevis and Culex sp. larvae interactions and behaviour 

    South, J.; Botha, T.L.; Wolmarans, N.J.; Wepener, V.; Weyl, O.L.F. (2019)
    Behavioural assays are used as a tool to understand ecotoxicological effects on organisms, but are often not applied in an ecologically relevant context. Assessment of the effect of chemical contaminants on behaviours ...
  • Inter-specific differences in invader and native fish functional responses illustrate neutral effects on prey but superior invader competitive ability 

    Mofu, L.; South, J.; Wasserman, R.J.; Dalu, T.; Woodford, D.J.; Dick, J.T.A.; Weyl, O.L.F. (2019)
    Inter-specific interactions are key factors in the structuring and functioning of ecological communities. Therefore, it is necessary to assess species interactions, such as predator–prey dynamics and competitive exclusion, ...
  • The effect of prey identity and substrate type on the functional response of a globally invasive crayfish 

    South, J.; McCard, M.; Khosa, D.; Mofu, L.; Madzivanzira, T.C.; Dick, J.T.A.; Weyl, O.L.F. (2019)
    Biological invasions threaten biodiversity on a global scale, therefore, developing predictive methods to understand variation in ecological change conferred is essential. Trophic interaction strength underpins community ...

View more